As a type of micro flat loop heat pipe, s-UTLHP (silicon-based ultra-thin loop heat pipe) is of great significance in the field of micro-scale heat dissipation. To prove the feasibility of s-UTLHP with high heat flux in a narrow space, it is necessary to study its heat transfer mechanism visually. In this paper, a structural design of s-UTLHP was proposed, and then, to realize the working fluid charging and visual experiment, an experimental system including a holding module, heating module, cooling module, data acquisition module, and vacuum chamber was proposed. Deionized water was selected as a working fluid in the experiment. The overall and micro phenomena of s-UTLHP during startup, as well as the evaporation and condensation phenomena of s-UTLHP during stable operation, were observed and analyzed. Finally, the failure phenomenon of s-UTLHP was analyzed, and several solutions were proposed. The observed phenomena and experimental conclusions can provide references for further related experimental research.

中文翻译：

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以去离子水为工质的硅基超薄回路热管可视化实验研究

s-UTLHP（硅基超薄回路热管）作为一种微型扁平回路热管，在微尺度散热领域具有重要意义。为了证明在狭窄空间内具有高热通量的s-UTLHP的可行性，有必要对其传热机理进行可视化研究。本文提出了s-UTLHP的结构设计，然后为了实现工质充注和可视化实验，提出了包括保温模块、加热模块、冷却模块、数据采集模块和真空室的实验系统。 . 实验选用去离子水作为工作液。对s-UTLHP在启动过程中的整体和微观现象，以及s-UTLHP在稳定运行过程中的蒸发和冷凝现象进行了观察和分析。最后，分析了s-UTLHP的失效现象，提出了几种解决方案。观察到的现象和实验结论可为进一步的相关实验研究提供参考。